Wiktionary
south-south-west
a. halfway between south and south-west, 191.5 degrees off north adv. in a south-south-west direction alt. halfway between south and south-west, 191.5 degrees off north
Usage examples of "south-south-west".
The wind was no longer backing to the north and the San Andreas, as far as he could judge, was still heading roughly between south-west and south-south-west.